WO2014141323A1 - Structure de borne, structure de borne pour disjoncteur, et procédé de choix de borne - Google Patents

Structure de borne, structure de borne pour disjoncteur, et procédé de choix de borne Download PDF

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Publication number
WO2014141323A1
WO2014141323A1 PCT/JP2013/001773 JP2013001773W WO2014141323A1 WO 2014141323 A1 WO2014141323 A1 WO 2014141323A1 JP 2013001773 W JP2013001773 W JP 2013001773W WO 2014141323 A1 WO2014141323 A1 WO 2014141323A1
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WO
WIPO (PCT)
Prior art keywords
nut
terminal
base
terminal screw
parallel
Prior art date
Application number
PCT/JP2013/001773
Other languages
English (en)
Japanese (ja)
Inventor
大久保　秀明
洋之 野▲崎▼
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201380072628.6A priority Critical patent/CN104981944B/zh
Priority to JP2013528860A priority patent/JP5397574B1/ja
Priority to PCT/JP2013/001773 priority patent/WO2014141323A1/fr
Publication of WO2014141323A1 publication Critical patent/WO2014141323A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/302—Clamped connections, spring connections utilising a screw or nut clamping member having means for preventing loosening of screw or nut, e.g. vibration-proof connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/304—Clamped connections, spring connections utilising a screw or nut clamping member having means for improving contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2425—Structural association with built-in components
    • H01R9/2433—Structural association with built-in components with built-in switch

Definitions

  • the present invention relates to a terminal structure for connecting an external terminal, a terminal structure of a circuit breaker, and a terminal selection method.
  • Patent Document 1 is disclosed as a terminal structure and a circuit breaker terminal structure that can easily change the pitch between terminals of the connection terminals and easily connect with external terminals having different connection piece pitches.
  • the outer peripheral two surfaces of the hex nut 14 face the two wall surfaces of the nut holding hole 1b, and when the connecting screw is screwed to the nut, the rotation of the nut is suppressed by the two wall surfaces of the nut holding hole 1b. have.
  • the outer peripheral two surfaces of the hexagon nut 14 are in contact with the two surfaces of the nut holding hole 1b to suppress rotation, which is different from the nut holding by the normal nut holding hole 6 surface. Since it is a form, when an excessive torque was applied to the terminal screw, there was a problem that the nut would idle. Specifically, in order to move the hex nut 14, a space of a predetermined gap exists on the opposing surface of the nut holding hole 1b and the hex nut 14, and the hex nut 14 and the base are provided by turning the terminal screw.
  • the wall surface of the nut holding hole 1b is in contact with two points due to the existence of the space, and an excessive torque is applied from this state, so that the base is shaved and the nut holding hole 1b provided in the base is removed.
  • the width becomes larger than the distance between the vertex of a certain corner provided in the hexagon nut 14 and the corner vertex of the corner, and the hexagon nut 14 is idled. (See FIGS. 8a, b and c)
  • the present invention can easily change the pitch between the terminals of the connection terminals, easily connect the external terminals having different connection piece pitches, and easily pull out the wired external terminals.
  • a terminal structure without this and a terminal structure for a circuit breaker are provided.
  • the terminal structure according to the present invention includes a plurality of connection terminals arranged in parallel, a long hole for inserting a terminal screw long in the connection terminal parallel arrangement direction, and a terminal screw inserted through the long hole. And a nut to be screwed thereto, a plurality of recesses for receiving the connection terminal, and a base made of an insulator having a space for accommodating the terminal screw and the nut and allowing the terminal screw to move along the elongated hole.
  • the distance between a pair of surfaces that serve as a detent for the nut provided in the space for accommodating the nut provided in the base and parallel to the direction in which the terminal screw moves along the elongated hole is L0.
  • the distance between the vertex of one corner provided on the nut and the vertex of the opposite corner is L1, and a pair of nuts provided parallel to the direction in which the terminal screw moves along the elongated hole.
  • the distance between the surfaces was defined as L2, respectively. If, in which L0-L2 is configured and L1 / L0 least 0.2mm is 1.33 or more.
  • the pitch between the terminals of the connection terminals can be easily changed by finding the optimum distance between the nut and the gap between the nut holding hole for moving the nut and the nut diameter, It becomes possible to prevent idling. Also, by preventing the nut from spinning around, it is possible to tighten the terminal screw with a predetermined torque, and a sufficient fastening force is obtained between the terminal retainer and the connection terminal, ensuring the connection of the wired external terminal Is done.
  • FIG. 1 It is a perspective view which shows the external appearance of a circuit breaker. It is a disassembled perspective view which shows the terminal structure of a circuit breaker. It is an expansion perspective view of the terminal part of a circuit breaker. It is an expansion perspective view of the base of a circuit breaker. It is a figure which shows the dimensional relationship of the nut holding hole and nut which were provided in the base. It is sectional drawing of a connecting terminal. It is a figure which shows the case where a nut is shapes other than a square nut. It is the schematic explaining the conventional terminal structure.
  • FIG. 1 is a perspective view showing an external appearance of a circuit breaker according to Embodiment 1 of the present invention
  • FIG. 2 is an exploded perspective view of FIG. 1 showing a terminal structure
  • 3 is an enlarged perspective view of the terminal portion of FIG. 2
  • FIG. 4 is an enlarged perspective view of the base of FIG. 2
  • FIG. 5 is a diagram showing the dimensional relationship between the nut holding hole provided in the base and the nut
  • FIG. It is sectional drawing of a terminal.
  • a circuit breaker 100 includes a base 1 made of an insulating material, a housing formed of a cover 2 attached thereto, and a circuit breaker mechanism 10 housed in the housing.
  • a plurality (three in this example) of connection terminals 11 are provided extending from the circuit breaker mechanism 10 at a predetermined interval.
  • the connection terminal 11 is provided with a long slot 11a extending in the direction of the adjacent connection terminal, and a terminal screw 13 is inserted into the slot 11a.
  • the terminal screw 13 has a terminal presser 12 inserted so that there is no play in the screw.
  • the terminal retainer 12 has a rectangular shape, and a tapered portion 12a is formed at the upper edge of the four sides.
  • the terminal screw 13 is screwed into the nut 14, and the connection piece 4 a of the external terminal 4 such as an electric wire placed on the connection terminal 11 is clamped between the terminal presser 12 and the connection terminal 11.
  • a handle 3 for manually operating the circuit breaker mechanism 10 is provided at the center of the cover 2 that covers the circuit breaker mechanism 10 and the connection terminal 11 of the circuit breaker 100 from above.
  • the base 1 is provided with three recesses 1 a that accommodate the connection terminals 11, which are partitioned by a partition wall 1 c that restricts the movement of the connection terminals 11. Yes.
  • a nut holding hole 1b that suppresses the rotation of the nut 14 and allows the nut 14 to move in the direction of the adjacent recess, that is, the direction along the elongated hole 11a, is provided at the bottom of each partitioned recess 1a.
  • a hole 1bb is formed at the bottom of the nut holding hole 1b so that the lower end of the terminal screw 13 protruding from the nut 14 can move in the direction of the adjacent recess.
  • the plane of the nut holding hole 1b is shown in FIG.
  • FIG. 1 An example of the dimensional relationship between the nut holding hole 1b provided in the base 1 and the nut 14 in the present invention is shown in FIG. That is, the nut holding hole 1b provided in the base 1 is formed with a pair of surfaces that are provided in parallel with the direction in which the terminal screw 13 moves along the elongated hole 11a and serves as a detent for the nut 14. The distance between the two surfaces (the width L0 of the nut holding hole 1b) is 7.2 mm. A square square nut 14 having a width of 7 mm is held in the nut holding hole 1b.
  • the nut 14 is configured to have a clearance of 0.2 mm (0.1 mm on each side) in the direction perpendicular to the direction in which the nut 14 moves along the long hole 11a. Therefore, the nut 14 does not interfere with a pair of surfaces that prevent the nut 14 from rotating around the nut holding hole 1b provided in the base 1 in a direction along the elongated hole 11a provided in the connection terminal 11 in FIG. It is possible to move left and right in
  • the distance between the apex of one corner provided on the nut 14 and the apex of the opposite corner is obtained by 7 ⁇ cos 45 ° in the case of a square square nut having a width of 7 mm, and the value is about It becomes 9.9 mm. This value is about 1.375 times the width 7.2 mm of the nut holding hole 1b provided in the base.
  • Test No. 1 is a test result using an M3 size square nut. Although L1 / L0 is 1.08, which is 1 or more, 100% of the nut 14 is idle.
  • the inventors of the present invention have shown through experiments that the relationship between the amount of scraping of the base 1 caused by the rotation of the nut and the idle rotation of the nut 14 indicates that the width L0 of the nut holding hole 1b provided in the base 1 and the nut
  • the critical numerical value which is required to be 1.33 or more in the ratio L1 / L0 of the distance L1 between the vertex of a certain corner provided in 14 and the corner vertex of the corner is found.
  • a pair of surfaces of the nut 14 provided in parallel with the direction in which the terminal screw 13 moves along the elongated hole 11a, and a pair of surfaces that prevent the nut 14 of the nut holding hole 1b provided in the base 1 from rotating. Since there is a clearance of 0.2 mm (0.1 mm on each side) in the direction perpendicular to the direction in which the nut 14 moves along the long hole 11 a, before the terminal screw 13 is screwed onto the nut 14. If so, the nut 14 can be freely moved to the left and right in FIG. Generally, the dimensional tolerance of the nut 14 is allowed only in the minus direction according to JIS standards, etc.
  • the dimensional tolerance of resin molded products gives a tolerance of about ⁇ 0.1 mm for parts with high required accuracy. Therefore, if L0-L2 is 0.2 mm or more, it can be determined that the nut 14 can be moved left and right in the holding hole 1b provided in the base 1 without being obstructed. That is, only when the terminal screw 13 is screwed into the nut 14 while keeping the nut 14 movable without always contacting the nut holding hole 1b and the nut 14 provided in the base 1, a pair of the nut holding holes 1b. This surface works as a detent for the nut 14.
  • the nut 14 of the nut holding hole 1b provided in the base 1 from the center of the nut 14 will be described. Therefore, even when the same torque value is applied to the nut 14, the force applied to the base 1 becomes weaker as the distance is longer, and the base 1 is less likely to be scraped. Since the base 1 is difficult to cut, the nut 14 is more difficult to idle.
  • the base 1 is made of a thermoplastic resin (for example, PBT resin) containing 30% or more of glass, so that the base 1 is compared with the case of containing no glass. Since the base 1 is hard to be scraped even if a force is applied while abutting against the steel nut 14, the nut 14 is difficult to idle.
  • a thermoplastic resin for example, PBT resin
  • the size of the terminal screw 13 in the present invention is M4, and the allowable tightening torque is limited to 16.5 N ⁇ m or less by describing the value in the instruction manual or the like.
  • the maximum allowable tightening torque By restricting the maximum allowable tightening torque, excessive torque is not applied to the terminal screw 13, so that the force applied in a state where the nut 14 and the wall surface of the nut holding hole 1 b provided in the base 1 are in contact with each other. Becomes less than a certain value, the base 1 is difficult to cut and the nut 14 is difficult to idle.
  • the lateral dimension of the square square nut having a width of 7 mm in FIG. 5 is 7 mm.
  • the lateral dimension of the regular hexagonal nut having a width of 7 mm in FIG. 8 is about 8.08 mm. That is, when a nut having the same width is applied, the square square nut has a lateral dimension, that is, a dimension that allows the nut 14 to move along the elongated hole 11 a provided in the connection terminal 11. Smaller and smaller.
  • a square or regular hexagonal nut is not necessarily applied as long as L0-L2 is 0.2 mm or more and L1 / L0 is 1.33 or more.
  • test no By applying an irregularly shaped nut of 7 mm x 6.6 mm as shown in Fig. 3, by making the width 6.6 mm while ensuring a nut length of 7 mm according to the groove width, the laterally movable dimension is reduced and the small size is achieved. Can be achieved.
  • the nut 14 does not have a chamfered portion on either the surface that receives the insertion of the terminal screw 13 or the opposite surface, as shown in the section AA of FIG. Therefore, even if an excessive torque is applied in a state where the nut 14 and the wall surface of the nut holding hole 1b provided in the base 1 are in contact with each other, the force applied from the nut 14 to the base 1 is dispersed as much as there is no chamfered portion. Since the pressure is reduced, the base 1 is difficult to cut and the nut 14 is difficult to rotate idle.
  • connection terminal 11 As shown in FIGS. 3 and 6, a plurality of V-shaped grooves 11 b are formed in the connection terminal 11 in parallel with the parallel arrangement direction of the connection terminals 11.
  • the terminal screw 13 is screwed with the nut 14 and the connection piece 4 a of the external terminal 4 such as an electric wire placed on the connection terminal 11 is clamped between the terminal presser 12 and the connection terminal 11,
  • the connection piece 4a of the external terminal 4 is pressed toward the connection terminal 11 by the force applied from the terminal retainer 12, and a part of the connection piece 4a of the external terminal 4 is press-fitted into the V-shaped groove 11b formed in the connection terminal 11. Is done.
  • connection piece 4a of the external terminal 4 press-fitted into the connection terminal 11 is retained by itself. This has an effect and prevents the wired external terminal 4 from being pulled out easily.
  • the nut 14 having the L1 and L2 dimensions according to the L0 dimension of the base.
  • a L2 dimension angle nut of minus 0.2 mm or more is selected with respect to the L0 dimension, and the distance L1 between one corner of the nut and the opposite angle is not less than 1.33 ⁇ L0 dimension.
  • the nut should be selected.
  • FIG. 7 The shape of the nut 14 according to the present invention is not limited to a square square nut. As shown in FIG. 7, the difference between the width L0 of the nut holding hole 1b provided in the base 1 and the width L2 of the nut 14 is 0.2 mm or more, and the width L0 of the nut holding hole 1b provided in the base 1 As long as the ratio L1 / L0 of the distance L1 between the apex of one corner provided on the nut 14 and the apex of the opposite corner is 1.33 or more, the shape of the nut 14 is Regardless, it has the effect of the present invention.
  • the terminal structure according to the present invention can be used not only for circuit breakers but also for terminal structures used in various electric devices.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Breakers (AREA)

Abstract

La présente invention concerne une structure de borne, comprenant : une pluralité de bornes de connexion (11) disposées selon un agencement en rangée ; des trous allongés (11a), disposés sur ces bornes de connexion (11) pour laisser passer à travers des vis de bornes, et allongés dans la direction de l'agencement en rangée de bornes de connexion ; et des vis de bornes (13) qui passent à travers les trous allongés (11a) et des écrous (14) montés dessus par filetage. La constitution est telle que, si L0 est défini comme la distance entre une paire de surfaces qui stoppent la rotation d'un écrou (14) disposé parallèlement à la direction de mouvement d'une vis de borne (13) le long d'un trou allongé (11a) dans un espace qui reçoit un écrou (14) disposé dans une base (1), si L1 représente la distance entre le sommet d'un certain angle disposé sur l'écrou (14) et le sommet d'un angle opposé à celui-ci, et si L2 représente la distance entre une paire de surfaces de l'écrou (14) disposées parallèlement à la direction de mouvement de la vis de borne (13) le long du trou allongé (11a), L0-L2 est supérieur ou égal à 0,2 mm, et L1/L0 est supérieur ou égal à 1,33.
PCT/JP2013/001773 2013-03-15 2013-03-15 Structure de borne, structure de borne pour disjoncteur, et procédé de choix de borne WO2014141323A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201380072628.6A CN104981944B (zh) 2013-03-15 2013-03-15 端子构造及电路断路器的端子构造以及端子选定方法
JP2013528860A JP5397574B1 (ja) 2013-03-15 2013-03-15 端子構造および回路遮断器の端子構造並びに端子選定方法
PCT/JP2013/001773 WO2014141323A1 (fr) 2013-03-15 2013-03-15 Structure de borne, structure de borne pour disjoncteur, et procédé de choix de borne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/001773 WO2014141323A1 (fr) 2013-03-15 2013-03-15 Structure de borne, structure de borne pour disjoncteur, et procédé de choix de borne

Publications (1)

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WO2014141323A1 true WO2014141323A1 (fr) 2014-09-18

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PCT/JP2013/001773 WO2014141323A1 (fr) 2013-03-15 2013-03-15 Structure de borne, structure de borne pour disjoncteur, et procédé de choix de borne

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JP (1) JP5397574B1 (fr)
CN (1) CN104981944B (fr)
WO (1) WO2014141323A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11270066B2 (en) 2010-04-30 2022-03-08 Microsoft Technology Licensing, Llc Temporary formatting and charting of selected data
US11385786B2 (en) 2010-04-30 2022-07-12 Microsoft Technology Licensing, Llc Spin control user interface for selecting options

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719224A (ja) * 1993-07-02 1995-01-20 Sekisui Chem Co Ltd ナット固定装置
JP2007194088A (ja) * 2006-01-19 2007-08-02 Angel Kogyo Kk 端子台の製造方法、端子台、プリント配線板及び電子機器
JP2008274651A (ja) * 2007-04-27 2008-11-13 Sumitomo Kinzoku Kozan Siporex Kk Ａｌｃ埋設アンカー金具、ａｌｃパネルおよびａｌｃパネルの取付構造
JP4310230B2 (ja) * 2004-04-28 2009-08-05 三菱電機株式会社 端子構造および回路遮断器の端子構造
JP2013008619A (ja) * 2011-06-27 2013-01-10 Fuji Electric Co Ltd 電子機器の端子装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0719224A (ja) * 1993-07-02 1995-01-20 Sekisui Chem Co Ltd ナット固定装置
JP4310230B2 (ja) * 2004-04-28 2009-08-05 三菱電機株式会社 端子構造および回路遮断器の端子構造
JP2007194088A (ja) * 2006-01-19 2007-08-02 Angel Kogyo Kk 端子台の製造方法、端子台、プリント配線板及び電子機器
JP2008274651A (ja) * 2007-04-27 2008-11-13 Sumitomo Kinzoku Kozan Siporex Kk Ａｌｃ埋設アンカー金具、ａｌｃパネルおよびａｌｃパネルの取付構造
JP2013008619A (ja) * 2011-06-27 2013-01-10 Fuji Electric Co Ltd 電子機器の端子装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11270066B2 (en) 2010-04-30 2022-03-08 Microsoft Technology Licensing, Llc Temporary formatting and charting of selected data
US11385786B2 (en) 2010-04-30 2022-07-12 Microsoft Technology Licensing, Llc Spin control user interface for selecting options

Also Published As

Publication number Publication date
CN104981944B (zh) 2017-05-31
JPWO2014141323A1 (ja) 2017-02-16
CN104981944A (zh) 2015-10-14
JP5397574B1 (ja) 2014-01-22

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